Bug? Does anyone know why mirrored objects don't align like the original?

[JussyAD]

OS: Windows 8.1 Version 6.3 (Build 9600)
Word size of FreeCAD: 64-bit
Version: 0.20.24720 (Git)
Build type: Release
Branch: master
Hash: 8b0c58d1b45017ad42bf0fa8f827f1cf22a398e7
Python version: 3.8.6+
Qt version: 5.15.2
Coin version: 4.0.1
OCC version: 7.5.0
Locale: English/South Africa (en_ZA)

Try using performing coincident plane constraint to align the floating bracket to the one on the chassis. every time I get an error. The bracket on the chassis is mirrored and that's 100% of the problem. Should it be? Is this a bug?

[chrisb]

Moved to Assembly forum.

[kbwbe]

Try using performing coincident plane constraint to align the floating bracket to the one on the chassis. every time I get an error. The bracket on the chassis is mirrored and that's 100% of the problem. Should it be? Is this a bug?

Hi,
this is not a bug. Doing mirrors within the assembly is not a good idea, as the mirrored objects are no A2p parts. Therefore you cannot assemble them this way.

You can do the mirroring within the sourcefile of your part which you want to mirror. After that you can import the original part and the mirrored one separately into your assembly by using the function "add a single shape from an external file" of A2plus. These imports can be handled by the program correctly.

Byside this, the parts which you want to mirror seem to be symmetrical and you can assemble them without mirroring, only changing their orientation with FC's transform tool.

BR, Klaus

[JussyAD]

Hi,
this is not a bug. Doing mirrors within the assembly is not a good idea, as the mirrored objects are no A2p parts. Therefore you cannot assemble them this way.
You can do the mirroring within the sourcefile of your part which you want to mirror.
[/quote]

Thank you, that makes sense and that is a good tip to mirror in the source file.